Patents Assigned to Polymatech Co., Ltd.
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Patent number: 8872038Abstract: To provide a technique by which a material exhibiting high adhesiveness to objects to be fixed can be selected regardless of a material used for an insulating base in an anisotropic conductor having an adhesive section. An intermediate sheet which can be attached to the base is provided between the base and adhesive section. Since the intermediate sheet is provided in this manner, adhesive materials that exhibit high adhesive force to objects to be fixed can be used for the adhesive section without the consideration for adhesive force to the base. Furthermore, adhesive force which cannot be exhibited between the adhesive section and the base in the case of direct contact of the adhesive section with the base can be exhibited.Type: GrantFiled: August 25, 2010Date of Patent: October 28, 2014Assignee: Polymatech Co., Ltd.Inventor: Yutaka Nakaone
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Patent number: 8854313Abstract: There is provided a technique which can reduce the entire thickness of a push-button switch while securing the brightness of the illumination and can increase the sensitivity and accuracy of a slide input. Use of a light guide sheet separating from a surface-type capacitance sensor is excluded, thereby being able to reduce the entire thickness of a sensor-integrated illuminated key sheet while a light guide sheet serves to secure the brightness of the illumination. A surface sheet is provided so as to contact the operation surface side of the light guide sheet as the substrate of the surface-type capacitance sensor. The distance between the operation surface of the surface sheet and the surface-type capacitance sensor can therefore decrease, which can enhance the sensitivity and accuracy of the slide input.Type: GrantFiled: December 21, 2010Date of Patent: October 7, 2014Assignee: Polymatech Co., Ltd.Inventor: Yasunori Takeda
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Patent number: 8827528Abstract: The present invention provides technology that can efficiently guide light to the interior of a key sheet and prevents light from leaking from the circumferences of key tops. A key sheet has a light-shielding dark print layer, on the rear surface of a base sheet, that is a cured body of a coating liquid that is not dissolve to the surface of the base sheet, and also has a smooth surface between the base sheet and the dark print layer. The invention can make light transmitting in the base sheet hard to enter the dark print layer so that the light can be efficiently guided in the base sheet, and also can prevent light from transmitting through the base sheet by blocking the light.Type: GrantFiled: September 15, 2009Date of Patent: September 9, 2014Assignee: Polymatech Co., Ltd.Inventors: Yasunori Takeda, Hiroki Kishiku
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Patent number: 8820949Abstract: Provided is a key sheet or a lightproof light guiding sheet guiding light efficiently through an interior of the key sheet and preventing light leakage through a periphery of key tops. On a base sheet, a transparent resin layer, and further, a lightproof dark print layer are provided as needed, with at least one of the transparent resin layer and the lightproof dark print layer being formed of a non-corrosive coating liquid. Further, a smooth surface is formed between the base sheet and the dark print layer.Type: GrantFiled: December 29, 2008Date of Patent: September 2, 2014Assignee: Polymatech Co., Ltd.Inventor: Yasunori Takeda
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Patent number: 8691368Abstract: A thermally conductive sheet comprises a thermally conductive polymer layer, an adhesive layer provided on an outer surface of the thermally conductive polymer layer, and a thermal diffusion layer, which is a functional layer provided on the adhesive layer. The thermally conductive polymer layer is formed of a thermally conductive polymer composition containing a polymer matrix and a thermally conductive filler. The coefficient of static friction of the thermally conductive polymer layer is 1.0 or lower. The adhesive layer has an outer shape smaller than that of the thermally conductive polymer layer.Type: GrantFiled: March 26, 2008Date of Patent: April 8, 2014Assignee: Polymatech Co., Ltd.Inventors: Mitsuru Ohta, Motoki Ozawa, Yoshiaki Okabayashi
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Patent number: 8479899Abstract: Disclosed is a damper that is easy to mount and capable of attenuating to a sufficient degree a vibration generated by an electronic component; also disclosed are an electronic component and an electronic apparatus that are provided with such a damper. A mounting insertion portion is provided with a hard portion maintaining the configuration of the mounting insertion portion.Type: GrantFiled: April 15, 2008Date of Patent: July 9, 2013Assignee: Polymatech Co., Ltd.Inventors: Masataka Ohtake, Masayuki Itakura
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Publication number: 20130137322Abstract: A thermally conductive sheet includes a mesh sheet and a thermally conductive composition containing a resin composition and a thermally conductive filler and coating both sides of the mesh sheet so as to form a thermally conductive layer. The thermally conductive sheet is prevented from trapping air bubbles so as to exhibit high thermal conductivity, and is so strong that does not easily tear. The mesh sheet has mesh holes defined by thread intersecting with each other. The intersection of the threads is provided with an bubble inclusion inhibition part for preventing air bubbles from being trapped in the interface between the thermally conductive composition and the mesh sheet. The bubble inclusion inhibition part may be a fused portion, a pressure-bonded portion or the like.Type: ApplicationFiled: August 19, 2011Publication date: May 30, 2013Applicant: POLYMATECH CO., LTD.Inventor: Yasuyoshi Watanabe
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Patent number: 8439690Abstract: The present invention provides a technique that is easy for soldering fixture to a printed circuit board and is easy to handle. Regarding a connector having an insulating base portion and a conductive portion, in at least one direction of a surface to which the conductive portion is exposed, a metal plate extending from a side constituting the surface to another side not adjacent to the side is included. The metal plate can be fixed to a circuit board with solder, and deformation of the connector can be made less likely to occur.Type: GrantFiled: January 15, 2010Date of Patent: May 14, 2013Assignee: Polymatech Co., Ltd.Inventors: Akihito Takeuchi, Hitoshi Mizoguchi
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Patent number: 8419448Abstract: The present invention provides technology with high production efficiency for an elastic connector that electrically connects two connection target members. The technology enables an initial product to be quickly completed with a low initial cost, in correspondence to any distance between the connection target members and any angle formed between them. An elastic connector was obtained by forming a major-axis columnar body, in which a conductive part was formed by cross linking and hardening (solidifying) conductive members inside a tube-like part formed of an insulative rubber tube, and then cutting the major-axis columnar body with a cutting blade along a cutting line, which is in a direction crossing the axis of the major-axis columnar body, to shorten the major-axis columnar body. This elastic connector eliminates the need to create a new metal mold in its manufacturing.Type: GrantFiled: March 1, 2010Date of Patent: April 16, 2013Assignee: Polymatech Co., Ltd.Inventor: Hideaki Konno
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Patent number: 8377557Abstract: A thermally conductive sheet composite comprises a gelatinous thermally conductive sheet molded of a thermally conductive polymer composition containing a polymeric material and a thermally conductive filler, and a release sheet molded separately from the thermally conductive sheet and peelably laminated on at least one surface of a pair of surfaces of the thermally conductive sheet. The release sheet has a hardness of 30 or more as measured by a type A durometer in conformity with ISO 7619.Type: GrantFiled: June 25, 2009Date of Patent: February 19, 2013Assignee: Polymatech Co., Ltd.Inventor: Motoki Ozawa
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Patent number: 8287975Abstract: A laminated body comprises a thermally conductive sheet, a protective sheet, an auxiliary sheet, a carrier sheet and a coating sheet. The thermally conductive sheet comprises a main sheet body and an adhesive layer. The coefficient of static friction of the main sheet body is 1.0 or lower. The adhesive layer has high adhesiveness in comparison with the main sheet body, and has an outer shape smaller than that of the main sheet body. The protective sheet is formed having an outer shape larger than that of the adhesive layer, and provided with a cutting line extending toward the adhesive layer from the peripheral portion of the protective sheet so that the protective sheet can be cut along the cutting line.Type: GrantFiled: March 26, 2008Date of Patent: October 16, 2012Assignee: Polymatech Co., Ltd.Inventors: Mitsuru Ohta, Motoki Ozawa, Fumitaka Arai
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Patent number: 8221883Abstract: For a graphite sheet, a peak intensity ratio (P100/002) of a (100) diffraction peak and a (002) diffraction peak by X-ray diffractometry, and a peak intensity ratio (P110/002) of a (110) diffraction peak and a (002) diffraction peak thereby are set at 10 or more. The graphite sheet is manufactured through a step of preparing a polymer liquid which contains a polymer having carbon in its molecular chains and develops optical anisotropy, a step of unidirectionally orienting the molecular chains of the polymer, a step of obtaining a compact from the polymer liquid in the state that the orientation of the molecular chains of the polymer is maintained, and a step of carbonizing and thereafter graphitizing the compact.Type: GrantFiled: January 28, 2009Date of Patent: July 17, 2012Assignee: Polymatech Co., Ltd.Inventors: Naoyuki Shimoyama, Takehiko Nunokawa
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Patent number: 8137806Abstract: A thermal diffusion sheet is provided with a graphite sheet for diffusing heat generated by a heat emitting body and a polymer film provided on the graphite sheet. The thermal diffusion sheet is provided with a positioning portion for carrying out positioning relative to the heat emitting body.Type: GrantFiled: January 24, 2008Date of Patent: March 20, 2012Assignee: Polymatech Co., Ltd.Inventor: Yoshiaki Okabayashi
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Patent number: 8106320Abstract: Provided are a decorative sheet which is enhanced in durability of an edge portion of a soft feel layer thereof and which is unlikely to suffer breakage, a method of manufacturing such a decorative sheet, a decorative molded body, and a decorative key sheet. A compressed portion formed by crushing a foam layer in a thickness direction is provided at a side surface of an edge portion of a decorative sheet with a soft touch feeling.Type: GrantFiled: April 23, 2008Date of Patent: January 31, 2012Assignee: Polymatech Co., Ltd.Inventors: Tedi Kunthady, Masami Arai
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Patent number: 8072425Abstract: Disclosed are a key sheet for a pointing device and a pointing device using a magnet compact in terms of both magnetic force and size to allow a reduction in thickness. Between a pusher (14f) opposed to a contact input portion (E) of a board (P) and a magnet (11) fixed to a base sheet (14) at an outside position around the pusher (14f) as a center so as to be away from a key top (15), there is provided an elastic flexible portion (14d) allowing displacement in a depressing direction through depression of the key top (15) toward the contact input portion (E). As a result, it is possible to perform depressing operation on the key top (15), with the magnet (11) being provided on the base sheet (14), making it possible to perform switch input, such as confirmation input.Type: GrantFiled: May 26, 2006Date of Patent: December 6, 2011Assignee: Polymatech Co., Ltd.Inventors: Toshinori Takatsuka, Yoshifumi Honmatsu
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Patent number: 8013262Abstract: Provided is a key sheet allowing reliable sliding operation input through accurate coordinate position detection and depressing operation input of satisfactory depression operability through clear click feel. Fixation layers are formed at positions under depressing operation portions, and there are no fixation layers in portions around the depressing operation portions but gaps are formed. With this construction, it is possible to suppress a depression operation load to a low level at a time of depressing input operation, and, when contact switches with click feel are depressed, the click feel can be easily transmitted. Further, a surface sheet has movable contact portions which enter the gaps at a time of sliding input operation and which are displaced so as to be capable of coming into contact with a sensor sheet. With this construction, it is possible to sense, in a stable manner, capacitance at an in-plane position of a sliding operation surface of the sensor sheet.Type: GrantFiled: February 4, 2009Date of Patent: September 6, 2011Assignee: Polymatech Co., Ltd.Inventors: Yoshifumi Honmatsu, Yasunori Takeda, Yutaka Nakanishi
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Patent number: 7934709Abstract: Provided is a viscous fluid-sealed damper which helps to achieve an increase in degree of freedom in terms of the selection of the material of a sealing container, which can be produced with high production efficiency, and which helps to avoid leakage of the viscous fluid. A lid member is fixed to a container main body while compressing and holding a flange portion between a sealing member and the lid member, so an opening end of the container main body can be sealed with the lid member without having to effect fixation through fusion-bonding as in the prior art, and the degree of freedom in terms of material selection can be increased. Further, if the container main body is formed of a butyl rubber, the container main body can be fixed to the lid member without using any adhesive, so it is possible to achieve a reduction in production time and in cost. Further, it is possible to avoid leakage of the viscous fluid due to defective adhesion.Type: GrantFiled: September 17, 2007Date of Patent: May 3, 2011Assignee: Polymatech Co., Ltd.Inventors: Rie Miyakosawa, Junji Ohki
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Patent number: 7902470Abstract: Disclosed is a decorative key sheet of high visibility which is superior in terms of design and helps to maintain a quality appearance, which enables an operator to perform input operation safely, and which is of a thin type. The decorative key sheet is formed as a thin sheet including an operation plate, a film sheet, and a base sheet. A fine asperity pattern is provided on a front surface side of an operation plate. Further, a light reflection layer enhancing the visibility of the fine asperity pattern is provided on a back surface of the operation plate. The operation plate is transparent. The fine asperity pattern is formed on a resin layer.Type: GrantFiled: February 20, 2008Date of Patent: March 8, 2011Assignee: Polymatech Co., Ltd.Inventor: Junko Hosaka
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Patent number: 7875815Abstract: The present invention provides a key sheet in which adjacent key tops are prevented from moving in conjunction with each other even when intervals between the key tops are designed to be narrow, and which facilitates a depressing operation by eliminating interference between the adjacent key tops. Further, the present invention provides a pushbutton switch using the above-mentioned key sheet. When a central key top is depressed, a portion of a soft sheet positioned between the key top and the key tops therearound is deformed to a large degree. On the other hand, a hard sheet is flexed entirely to a portion extending to a portion directly below the key tops. As a result, a clearance portion between the soft sheet and the hard sheet is formed. Therefore, the left and right key tops do not move in conjunction with each other, thereby making it possible to prevent erroneous input.Type: GrantFiled: June 29, 2007Date of Patent: January 25, 2011Assignee: Polymatech Co., Ltd.Inventor: Yoshifumi Honmatsu
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Patent number: 7837183Abstract: Provided is a container body including a flexible portion made of a rubber-like elastic material and an annular connection portion made of a hard material in the shape of a substantially flat plate and having an upper surface to which the flexible portion is firmly fixed and a lower surface to which the lid body is firmly fixed. The flexible portion is provided, on a firm fixation region thereof that is firmly fixed to the annular connection portion, with a collar joint portion protruding widely in the direction of a plane of the annular connection portion. Therefore, the container body and the lid body are firmly coupled to each other, and the viscous fluid-filled damper can be reduced in height.Type: GrantFiled: August 3, 2006Date of Patent: November 23, 2010Assignee: Polymatech Co., Ltd.Inventor: Junji Ohki